: For legitimate game improvement, use community-vetted tools like Circleguard for replay analysis or official updates from the ppy/osu GitHub . How to Handle Legitimate .rar Files

: Tools labeled as "Buddy" or "Assistant" for osu! are frequently associated with automated gameplay or cheats. Using such software will likely lead to an immediate and permanent account restriction or ban by the osu! support team .

: Files distributed as .rar archives on third-party sites or YouTube descriptions often contain stealer logs or ransomware designed to compromise your personal data.

If you are certain the file is a safe community-made asset (like a skin or beatmap pack), the game cannot open .rar files directly. You must use an extraction tool like or WinRAR . Releases · ppy/osu - GitHub